Priest and Nun

A priest and nun are on their way back home from a convention when their car breaks down. They are unable to get repairs completed and it appears that they will have to spend the night in a motel. The only motel in his town has only one room available so they have a minor problem.
PRIEST: Sister, I don't think the Lord would have a problem, under the circumstances, if we spent the night together in this one room. I'll sleep on the couch and you take the bed.

SISTER: I think that would be okay.

They prepare for bed and each one takes their agreed place in the room. Ten minutes later...

SISTER: Father, I'm terribly cold.

PRIEST: Okay, I'll get up and get you a blanket from the closet. Ten minutes later...

SISTER: Father, I'm still terribly cold.

PRIEST: Okay Sister, I'll get up and get you another blanket. Ten minutes later...

SISTER: Father, I'm still terribly cold. I don't think the Lord would mind if we acted as man and wife just for this one night.

PRIEST: You're probably right... Get up and get your own blanket.